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Finding the Fourth Proportional to 231,409.63, 347,122.01 and 79,605.15

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Solution

The fourth proportional to 231,409.63, 347,122.01 and 79,605.15 is: 119,410.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,409.63 : 347,122.01 = 79,605.15 : x
  2. Step 2: Convert to fraction form
    231,409.63/347,122.01 = 79,605.15/x
  3. Step 3: Cross multiply
    231,409.63x = 347,122.01 × 79,605.15
  4. Step 4: Simplify right side
    231,409.63x = 27,632,699,674.35
  5. Step 5: Solve for x
    x = 27,632,699,674.35/231,409.63
  6. Step 6: Final answer
    x = 119,410.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.